diff options
| author | Ashok Reddy Soma | 2023-01-05 02:46:20 -0700 |
|---|---|---|
| committer | Dario Binacchi | 2023-02-27 16:28:30 +0100 |
| commit | cfb82f7c123e411b8cfb5d58c2c666f54cb9b66a (patch) | |
| tree | 218b71e1d41f5abc807fc02818584e3b9d13666d | |
| parent | 0024e7f72b689f8c2df731a69e20f47b6f8dc5a7 (diff) | |
mtd: nand: Mark reserved blocks
Reserved blocks are used for storing bad block tables. With "nand bad"
command, these reserved blocks are shown as bad blocks. This is leading
to confusion when compared with Linux bad blocks. Hence, display
"bbt reserved" when printing reserved blocks with "nand bad" command.
To acheive this, return 2 which represents reserved from nand_isbad_bbt()
instead of 1 in case of reserved blocks and catch it in cmd/nand.c.
"nand bad" command display's hexadecimal numbers, so add "0x" prefix.
Example log will show up as below.
ZynqMP> nand bad
Device 0 bad blocks:
0x00400000
0x16800000
0x16c00000
0x17000000
0x3d800000
0x3e400000
0xe8400000
0xff000000 (bbt reserved)
0xff400000 (bbt reserved)
0xff800000 (bbt reserved)
0xffc00000 (bbt reserved)
0x116800000
0x116c00000
0x1ff000000 (bbt reserved)
0x1ff400000 (bbt reserved)
0x1ff800000 (bbt reserved)
0x1ffc00000 (bbt reserved)
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Acked-By: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
| -rw-r--r-- | cmd/nand.c | 9 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/nand_bbt.c | 3 |
2 files changed, 8 insertions, 4 deletions
diff --git a/cmd/nand.c b/cmd/nand.c index 9a723f57579..b41e54ec422 100644 --- a/cmd/nand.c +++ b/cmd/nand.c @@ -567,9 +567,12 @@ static int do_nand(struct cmd_tbl *cmdtp, int flag, int argc, if (strcmp(cmd, "bad") == 0) { printf("\nDevice %d bad blocks:\n", dev); - for (off = 0; off < mtd->size; off += mtd->erasesize) - if (nand_block_isbad(mtd, off)) - printf(" %08llx\n", (unsigned long long)off); + for (off = 0; off < mtd->size; off += mtd->erasesize) { + ret = nand_block_isbad(mtd, off); + if (ret) + printf(" 0x%08llx%s\n", (unsigned long long)off, + ret == 2 ? "\t (bbt reserved)" : ""); + } return 0; } diff --git a/drivers/mtd/nand/raw/nand_bbt.c b/drivers/mtd/nand/raw/nand_bbt.c index 911472e91e1..cd451870a6f 100644 --- a/drivers/mtd/nand/raw/nand_bbt.c +++ b/drivers/mtd/nand/raw/nand_bbt.c @@ -1330,6 +1330,7 @@ int nand_isreserved_bbt(struct mtd_info *mtd, loff_t offs) * @mtd: MTD device structure * @offs: offset in the device * @allowbbt: allow access to bad block table region + * Return: 0 - good block, 1- bad block, 2 - reserved block */ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) { @@ -1348,7 +1349,7 @@ int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt) case BBT_BLOCK_WORN: return 1; case BBT_BLOCK_RESERVED: - return allowbbt ? 0 : 1; + return allowbbt ? 0 : 2; } return 1; } |